1. | none |
2. | A only |
3. | A and B only |
4. | A and B only |
Two boys are standing at the ends \(A\) and \(B\) of a ground, where \(AB = a.\) The boy at \(B\) starts running in a direction perpendicular to \(AB\) with velocity \(v_1.\) The boy \(A\) starts running simultaneously with velocity \(v\) and catches the other boy in a time \(t,\) where \(t\) is:
1. \(\frac{a}{\sqrt{v^2+v_1~^2}}\)
2. \(\sqrt{\frac{a^2}{v^2-v_1~^2}}\)
3. \(\frac{a}{(v-v_1)}\)
4. \(\frac{a}{(v+v_1)}\)
1. | execute SHM about the origin. |
2. | move to the origin and remain at rest. |
3. | move to infinity. |
4. | execute oscillatory but not SHM. |